#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	int N = 0;
	while (N--)
	{
		int a = 0;
		int b = 0;
		int c = 0;
		scanf("%d %d", &a, &b);
		c = a / b;
		(b + 1)* c;

	}
	return 0;
}